Can FRAMCOLOR PURE PIGMENT PLUS be used on hair that has been chemically relaxed?

Absolutely!

FRAMCOLOR PURE PIGMENT PLUS is a must have color for hair that has been chemically relaxed as this hair type can be porous/fragile, increasing the chances of breakage, dryness, and more prone to uneven color results. The strong hydrating formula without the use of a developer offers deep restructuring and color in one step!